Turn-table.



J. KITSON. TURN TABLE. Y APPLICATION FILED rms. 19, 1909.

Patented 001;. 5, 1909.

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UNITED STATES PATENT OFFICE.

JAMES KITSON, OF BUFFALO, NEW YORK.

TURN-TABLE.

Application iled February 19, 1909.

fo all whom fit may concern:

Be it known that I, JAMES KrrsoN, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented a certain new and useful Improvement in Turn-Tables, of whichthe following is a specification.

This invention relates to improvements in turn tables and the object ofthe invention is to produce a turn table of simple and lightconstruction which will be strong and capable of supporting heavyweights and yet require but a minimum of power to operate it.

The invention also relates to certain details of construction all ofwhich will be fully and clearly hereinafter described and claimed,reference being had to the accompanying drawings, in which Figure 1 is aplan view of the improved turn table, the revoluble platform being shownin dotted lines. Fig. 2 is an enlarged fragmentary vertical section online a a, Fig. 1. Fig. 3 is an enlarged central section through one ofthe rollers and its supporting frame, on line Z) I), Fig. 1. Fig. 4 isan enlarged fragmentary section through the frame for supporting therollers on line c c, Fig. 1.

In referring to the drawings for the details of construction, likenumerals designate like parts.

This improved turn table is designed to be used particularly in garagesand similar places for handling automobiles and other vehicles, althoughit can be constructed so as to support much heavier loads such as steamor electric locomotives.

The turn table, in general, consists of a base supported upon a suitablefoundation and carrying a track, a revoluble platform carrying a trackupon its under surface, and a series of rollers interposed between thetwo tracks for revolubly supporting the platform.

In the adaptation of the invention as illustrated in the accompanyingdrawings, the turn table is located in an opening in the floor ofsuitable depth so that the top surface of the revoluble platform israised a slight distance above the level of the floor.

The base of the turn table consists of a circular member 1 which isstrengthened by transverse and longitudinal members 2 which contact attheir outer ends against the circular member, the whole being firmly em-Speccation of Letters Patent.

Patented Oct. 5, 1909. Serial No. 478,935.

bedded in a foundation 3 of cement or other suitable material.

A circular track 4 is supported upon the circular member 1 of the base,and is fastened thereto in any well known way, and a central pivot 5formed substantially as shown in Fig. 2, is securely fastened by boltsl6, to the transverse members 2 of the base, centrally within the track4. rlhe central pivot is extremely short with a wide flanged bottomthrough which the bolts G pass vso it is held in place very rigidly andwith extraordinary strength.

A revoluble platform 7 of circular form has a track 8 secured to itsbottom surface, which is `of substantially the same size and form as thetrack 4. A series of rollers 9 are interposed between the two tracks 4and 8 so that the platform is revolubly supported upon t-he rollers. Therollers 9 are supported upon short pins or studs 10 carried by acircular ring- 11 which is connected to a central hub 12 by radiatingarms 13. These arms 13 are preferably formed of metal and are lappedupon and riveted at their inner ends to short connecting arms of thehub. The outer ends of the arms 13 are bent at right angles and arebolted or riveted to the ring 11 as shown in Fig. 4. The pins 10 arearranged at equal distances around and extend radially out from thesupporting ring 11 and are fastened thereto by nuts 14, screwed upon theinner ends of the pins. The rollers 9 are loosely mounted upon the pinsand are retained thereon by washers 15 and nuts 1G screwed upon theirouter eX- tremities. The central hub 12 of the roller supporting framehas an opening through which the central pivot 5 projects.

The revoluble platform 7 has a central boss 17 fastened to its undersurface and is provided with an opening through which the central pivot5 passes. A cap 18 is fastened by a bolt 19 to the upper end of thetransversely at one end of the turn table and is secured to one of thetransverse bars 2l by hinges 23, so that it can be turned up as shown indotted lines in Fig. 2. The purpose of this strip 22 is to provide aninclined surface to enable the vehicle to readily mount the revolubleplatform. When the vehicle is in place thereon the strip is turned upoff the floor so as not to interfere with the turning movement of theplatform. The recess or opening 24 in the floor in which the turn tableis located is slightly larger in diameter than the platform 7 so thatsaid platform can be located partly within said opening, see .F ig. 2.

The chief advantage of this improved turn table is that the entireweight of the vehicle carried by the platform is borne by the lowertrack, the supporting pins of the rollers and the roller supportingframe acting simply to maintain the rollers in their proper positionswith respect to each other and the tracks.

Another great advantage is that the friction is largely reduced owing tothe fact that the upper track revolves upon the rollers, and the rollersrevolve upon the lower track so that but a minimum of power is necessaryto rotate the turn-table.

I claiml. In a device of the class described, a base embedded in cementand having a circular member, a short center pivot extending from thebase, a rotatable frame rotatably mounted on an intermediate portion ofthe pivot and consisting` of a center hub, arms extending from the huband a circular ring at the outer ends of said arms, studs attached atintervals to the circular ring and rollers rotatably mounted on thestuds.

2. In a device of the class described, a base consisting of crossmembers and a circular member embedded rigidly in cement, a movableplatform above the base and a movable element arranged between the baseand the movable platform and including a center hub, arms radiating fromthe hub, a circular ring surrounding and attached to the outer end ofthe arms, short studs extending at intervals from the ring and rollersrotatably mounted on the studs.

3. In a device of the class described, a stationary base, a movableplatform above the base and a rotatable frame arranged between thestationary base and the movable platform and having a circular outerring, studs arranged at intervals around the ring and rollers rotatablymounted on the studs.

4. A turn table comprising a base having a circular member, a shortcentral pivot having a wide flanged bottom attached to the base, arotatable supporting frame ournaled on the central pivot and having anouter circular ring and carrying rollers and a platform located abovethe supporting frame and pivot-ally supported on the upper terminal ofthe central pivot.

5. In a device of the class described, a base embedded in cement andhaving a circular member, a short center pivot extending from the base,a rotatable frame rotatably mounted on an intermediate portion of thepivot consisting of a center hub, arms extending from the hub, acircular ring at the outer ends of said arms; the outer end of the armsbeing bent at right angles and fastened to the circular ring, studsattached at intervals to the circular ring and rollers rotatably mountedon the studs.

' JAMEs xiTsoN.

litnesses L. M. SANGSTER, GEORGE A. NEUBAUER.

